Drilldown: Patents
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Patents > Office :
DE or
DEG
& Application number :
307110D or
494571D
& Grant date:
1910 - 1919
& Granted:
Yes
& Supplementary to patent :
Patent NO-1915-12-15 Carl Alfred Johansson or
None
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Showing below up to 1 result in range #1 to #1.